Their (A)houses used to be made of wood, (B)but now they build them (C)with bricks to make (D)it stronger. A. houses B. but C. with D. itĐoạn vănGiải thích18/37Their (A)houses used to be made of wood, (B)but now they build them (C)with bricks to make (D)it stronger.houses but with it